Podcast Beta
Questions and Answers
What is the purpose of the 'ip dhcp excluded-address' command on a Cisco router?
What is the result of a workstation sending a DHCPv6 INFORMATION-REQUEST message to a server?
Which type of ACL is preferred when filtering packets coming from multiple inbound interfaces before they exit the interface?
What is the advantage of configuring a Cisco router as a relay agent?
Signup and view all the answers
What is the purpose of a standard ACL?
Signup and view all the answers
How many ACLs can be created and applied to a router with two interfaces that is routing both IPv4 and IPv6 traffic?
Signup and view all the answers
What is the default behavior of untagged frames received on a trunk port?
Signup and view all the answers
Which of the following statements is true about legacy inter-VLAN routing?
Signup and view all the answers
What is the purpose of ICMPv6 Route Advertisement (RA) messages in stateless DHCPv6?
Signup and view all the answers
What is required for a SOHO router to be connected to an ISP?
Signup and view all the answers
Which of the following statements is true about dynamic allocation of IPv6 addresses?
Signup and view all the answers
What message will a workstation send to obtain an IP address when it boots after an address lease has expired?
Signup and view all the answers
Study Notes
Layer 2 and Layer 3 Addresses
- FF-FF-FF-FF-FF-FF is the Layer 2 destination address for a broadcast
- 255.255.255.255 is the Layer 3 destination address for a broadcast
Cisco Router Configuration
- Configuring a Cisco router as a relay agent provides relay services for multiple UDP services
- The command
ip address dhcpconfigures the router to obtain IP parameters from a DHCPv4 server
DHCPv6
- In stateless DHCPv6, a workstation sends a DHCPv6 INFORMATION-REQUEST message to a server for configuration information
- Stateless DHCPv6 is a method for configuring IPv6 addresses on employee workstations
- An administrator can configure a router to obtain IPv6 addresses using the command
ipv6 address dhcp
ACL Placement
- Inbound ACL placement is preferred when filtering packets from a single source
- Outbound ACL placement is preferred when filtering packets from multiple sources before they exit an interface
Access Control Lists
- The command
ip dhcp excluded-address 10.0.15.1 10.0.15.15excludes 15 IP addresses from being leased to DHCP clients - A standard ACL can be configured to allow only specific devices to access a network or resource
- A single access list statement can match multiple networks (e.g.
access-list 10 permit 192.168.16.0 0.0.3.255) - Up to 8 ACLs can be created and applied to a router with two interfaces (IPv4 and IPv6)
Network Configuration
- An administrator can configure a standard ACL to allow devices on a specific network to access other networks
- An ACL can be configured to deny traffic from a specific subnet to another subnet
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge of CCNA routing and switching concepts with this quiz. Questions cover topics such as VLANs, trunk ports, and DHCPv6.
